PCP Taipan - HUMA reg - issue and my workaround

[FL22]

So some of you who do or may have owned a Taipan veteran II might be aware of an issue with using the aftermarket HUMA regulator where air would leak from the atmospheric port.

After emailing HUMA, they responded with,

“Your veteran should have been delivered with two different length spacers. One of 30.5mm and one of 34mm. You may want to check if the other one works.

Taipan has altered the breather hole location a couple of times and in some cases the oring is very near the breather hole causing this issue.”

I found that compared to the stock regulator, the HUMA has a much narrower window for the port.

After making some measurements and reading on a few different forms, not finding a solution that I cared for this is what I decided to do and it has worked flawlessly so far.

I simply placed another regulator O-ring on the adjuster side, installed the regulator from the bottom holding the air tube up (vertically) to make sure that the O-ring stayed in position.

I pushed the regulator all the way in and the O-ring met with the stop inside the air tube, I then used the compressed air to remove the regulator and check the O-ring position. It stayed inside the tube, butted against the stop.

I used the old regulator with the external O-rings removed and tried to force the O-ring past the stop and could not do so.

I am also still using the same plenum spacer which by the way is much bigger than what HUMA quoted in the email.


I believe that more than one O-ring could be used if additional clearance is required.

This is not some elegant solution nor a universal perfected fix for this issue, but it has worked for my Airgun.

Just for general information, I know that some may be wondering why I chose to use a HUMA regulator over the oem. My reasons are simple, I don’t care for the factory one it fluctuates too much, also only owning one Taipan I fail to see the need to purchase a specialized tool for calibration.

One other factor is the dealer that I purchased this Airgun from is currently on my personal S#%t list due to multiple non response. (to buy stuff, not ask PITA noob technical questions, so epic fail)

 

[wolfmangreg]

Impressive work- great job finding a solution! Happy to hear it's working out.

Bummed for you about two things though.
- The dealer has to be better than that. Understand things can get a little crazy at times for a smaller operation, but no excuse for not at least acknowledging an inquiry, to let the customer know it's on their to do list.
- Getting a bad regulator. Only Taipan and maybe their distributors would know the exact numbers, but from these & other forums, have always had the impression that Mutant/Veteran (all gen) regulators are very good. That's certainly been my "sample of 1" experience with my Vet II. 8 to11 fps extreme spreads over a 40 to 50 shot string, with a standard deviation under 3 fps, is the norm.

Really wish you were having a similar experience... but greatly admire your persistence & ingenuity in getting things right!

 

[wolfmangreg]

One other thing- have you contacted Taipan directly to see if they'd send you a replacement reg?

 

[FL22]

Impressive work- great job finding a solution! Happy to hear it's working out.

Bummed for you about two things though.
- The dealer has to be better than that. Understand things can get a little crazy at times for a smaller operation, but no excuse for not at least acknowledging an inquiry, to let the customer know it's on their to do list.
- Getting a bad regulator. Only Taipan and maybe their distributors would know the exact numbers, but from these & other forums, have always had the impression that Mutant/Veteran (all gen) regulators are very good. That's certainly been my "sample of 1" experience with my Vet II. 8 to11 fps extreme spreads over a 40 to 50 shot string, with a standard deviation under 3 fps, is the norm.

Really wish you were having a similar experience... but greatly admire your persistence & ingenuity in getting things right!

Thank you Greg , and I appreciate your thoughtful response.

As far as the “dealer” is concerned, it’s accumulative starting from the initial purchase. I operate by the rule of “three strikes you’re out”.

Although I can appreciate and applaud the small dealers, I have had a bad experiences with two now and I am starting to prefer medium to larger ones with more consumer favorable practices and policies.

As to my regulator, I did rebuild it. I found that the lubricant inside was very tacky and stiff. After putting about 150 shots there was some improvement, but I still didn’t feel like it was where it should be.

One other thing- have you contacted Taipan directly to see if they'd send you a replacement reg?

Honestly I didn’t think of it as an option, it just seemed like the US importer had it stitched up… though I probably should have and tried.

I’ve had another issue with the Airgun since about three months after I purchased it, I tried to remedy this but became frustrated again due to a lack of response (strike 2) and decided to take matters into my own hands armed with a drill, bit, hammer and punch. I promise you that pumacarl would be clenching his teeth .

Perhaps I should reach out to Taipan and see if I can get replacement parts directly for that issue because as I was testing slugs this problem resurfaced itself, and I had to take even more aggressive measures if you could imagine lol (before going that route again, I tried to reach out hence strike 3 so I’m done with them, like a “PasadenaMike” kind of done ).

 

[FL22]

I received another email from HUMA after I made them aware of what I came up with for a quick fix, they provided me with a printable schematic where I could make good measurements (help with product improvement) and figure things out more precisely for myself in the meantime.

So with this information, I determined that I needed to utilize 2 O-rings to get good clearance for the atmospheric port. With just one O-ring if there was any movement in the regulator, it would’ve either blocked the port or start leaking.

Also I found out that when I stacked two O-rings it is possible to force one O-ring past the stop, I repeated it several times and I could feel it happening there was a distinct bump when I forced that first O-ring past the stop.

I subsequently utilized my caliper to ensure that the rings were seated against the stop without going past the required depth.

 

[Dogowski]

Thank you Greg , and I appreciate your thoughtful response.

As far as the “dealer” is concerned, it’s accumulative starting from the initial purchase. I operate by the rule of “three strikes you’re out”.

Although I can appreciate and applaud the small dealers, I have had a bad experiences with two now and I am starting to prefer medium to larger ones with more consumer favorable practices and policies.

As to my regulator, I did rebuild it. I found that the lubricant inside was very tacky and stiff. After putting about 150 shots there was some improvement, but I still didn’t feel like it was where it should be.

View attachment 19075

Honestly I didn’t think of it as an option, it just seemed like the US importer had it stitched up… though I probably should have and tried.

I’ve had another issue with the Airgun since about three months after I purchased it, I tried to remedy this but became frustrated again due to a lack of response (strike 2) and decided to take matters into my own hands armed with a drill, bit, hammer and punch. I promise you that pumacarl would be clenching his teeth .

Perhaps I should reach out to Taipan and see if I can get replacement parts directly for that issue because as I was testing slugs this problem resurfaced itself, and I had to take even more aggressive measures if you could imagine lol (before going that route again, I tried to reach out hence strike 3 so I’m done with them, like a “PasadenaMike” kind of done ).

I think you need to clean out the sticky lubricant off the reg and related parts and get some Reg Butter worked into all those parts especially the belleville washers and I'm sure it will improve your regs recovery time two fold. A tiny bit goes a long way. Worth a try!

 

[FL22]

I think you need to clean out the sticky lubricant off the reg and related parts and get some Reg Butter worked into all those parts especially the belleville washers and I'm sure it will improve your regs recovery time two fold. A tiny bit goes a long way. Worth a try!

Thank you @Dogowski , I will seriously consider it.

 

[Pumacarl]

... I tried to remedy this but became frustrated again due to a lack of response (strike 2) and decided to take matters into my own hands armed with a drill, bit, hammer and punch. I promise you that pumacarl would be clenching his teeth .

@FL22 I was clenching my teeth, until I read your comment, then I was laughing pretty hard!! You've really gone full "Shade Tree" working on a Taipan, that's for sure! I applaud your resolve. Huma seems to be putting in the work too. Historically, Taipan has always been just about perfect to market, and slow to change anything, so it is strange to hear about them moving a port around. Having a full understanding of your product and what it is supposed to be doing has lead to you finding a solution yourself. Congratulations!

 

[FL22]

Update

I have been working with HUMA customer support to resolve the issue, and they are working on it.

Now this may make some laugh or roll their eyes, but I’m not happy with the HUMA regulator numbers either .

So… I took the factory reg apart once more and cleaned it again.



Now I’m happy .

 

[Danman]

Update

I have been working with HUMA customer support to resolve the issue, and they are working on it.

Now this may make some laugh or roll their eyes, but I’m not happy with the HUMA regulator numbers either .

So… I took the factory reg apart once more and cleaned it again.

View attachment 19296

Now I’m happy .

Nice! Did you end up getting reg butter or just use some silicone oil/grease? Huma is great, im sure if my beloved (and currently flawless) S510's reg dies i will grab the Huma as a replacement....gives a bit of pressure adjustment too!

 

[FL22]

Nice! Did you end up getting reg butter or just use some silicone oil/grease? Huma is great, im sure if my beloved (and currently flawless) S510's reg dies i will grab the Huma as a replacement....gives a bit of pressure adjustment too!

I didn’t get any reg butter yet, I’m sure that I will at some point. I actually used the grease that came with the reg rebuild kit for my Wolverine.

 

[wolfmangreg]

Now yer cookin' with gas